For a crop of ambitious Democrats, the shroud of secrecy surrounding former President Joe Biden’s health has become an opportunity to break with party leadership. In recent days, a small chorus of Democrats has been litigating the wisdom of Biden running for a second term,

The Republican-led Senate moved Wednesday to overturn key Biden-era waivers allowing California to set its own vehicle emissions, a major blow to that state’s effort to regulate pollution from cars and trucks that could have broad environmental impacts for the rest of the country.

The multitrillion-dollar tax breaks package passed by House Republicans early Thursday would gut clean energy tax credits that Democrats approved three years ago while supporting increased mining, drilling and other traditional energy production.

After a stretch of limited public appearances since leaving office, former President Joe Biden’s cancer diagnosis arrived amid heightened scrutiny of his cognitive health.